Prince William and Kate Middleton have held their first audience since the start of lockdown as they greeted the President and First Lady of Ukraine.The royal couple, both 38, welcomed President Volodymyr Zelensky, 42, and his wife Olena, also 42, to Buckingham Palace, sitting down to enjoy a conversation. It is the first royal event to take place at the Queen's London residency since the start of lockdown back in March.